Natural Philosophy ... |
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Other editions - View all
Natural Philosophy: For the Use of Schools and Academies Joseph Anthony Gillet,William James Rolfe No preview available - 2016 |
Common terms and phrases
absorbed acid angle angle of incidence atmosphere axis ball becomes body boiling bulb called calorescence carbon centre cloud coil colors conductor convex copper crystalline lens cylinder direction distance earth elastic electricity ether expansion extraordinary ray flame focus force fork formed galvanometer gases give glass gravity Hence inches increases instrument iron latent heat length lens lines liquid luminous magnet means mercury metallic mirror molecules motion move musical sound needle object optic nerve ordinary ordinary ray particles passes pendulum pipe placed plane plate platinum polarized light pole pound pressure prism produced radiations raise ray of light reflected refracted retina rings screen seen shown in Figure shows solid sound-wave specific heat spectrum steam string substance surface thermometer tion tourmaline transmitted tube units of heat vapor velocity of sound vessel vibrations visual angle waves weight wheel wind wire zinc
Popular passages
Page 34 - ... that it is the pressure of the atmosphere on the surface of the water in the dish which keeps the water in the inverted jar.
Page 357 - Through the high wood echoing shrill; Sometime walking, not unseen, By hedge-row elms, on hillocks green, Right against the eastern gate Where the great Sun begins his state Robed in flames and amber light, The clouds in thousand liveries dight...
Page 375 - Her ivory forehead full of bounty brave, Like a broad table did itself dispread, For Love his lofty triumphs to engrave, ' And write the battles of his great godhead : All good and honour might therein be read; For there their dwelling was.
Page 24 - This result gives the weight of a bulk of water equal to that of the specimen, and by dividing the weight of the specimen in air by this number, the specific gravity is obtained.
Page 365 - Making allowance for the heat absorbed by the atmosphere, it has been calculated that the amount received by the earth during a year would be sufficient to melt a layer of ice 100 feet thick and covering the whole earth. But the sun radiates heat into space in every other direction as well as towards the earth; and if we conceive a hollow sphere to surround the sun at the distance of the earth, our planet would cover only of its surface.
Page 369 - ... seems to be secured, so that for ourselves and for long generations after us we have nothing to fear. But the same forces of air and water, and of the volcanic interior, which produced former geological revolutions, and buried one series of living forms after another, act still upon the earth's crust. They more probably will bring about the last day of the human race than those distant cosmical alterations of which we have spoken...
Page 369 - ... bloomed, and dropped its costly gum on the earth and in the sea ; when in Siberia, Europe, and North America groves of tropical palms flourished ; where gigantic lizards, and after them elephants, whose mighty remains we still find buried in the earth, found a home? Different geologists, proceeding from different premises, have sought to estimate the duration of the above-named...
Page 375 - All good and honour might therein be read; For there their dwelling was. And when she spake. Sweet words like dropping honey she did shed; And twixt the pearls and rubies softly brake A silver sound, that heavenly music seem'd to make.
Page 64 - There are various ways of agitating the air at the ends of pipes and tubes, so as to throw the columns within them into vibration. In organ-pipes this is done by blowing a thin sheet of air against a sharp edge. This produces a flutter, some particular pulse of which is then converted into a musical sound by the resonance of the associated column of air.
Page 75 - H7, since the power multiplied by the distance through which it moves equals the weight -multiplied by the distance through which it moves.